20320222 has 24 divisors (see below), whose sum is σ = 33467040. Its totient is φ = 9247680.

The previous prime is 20320211. The next prime is 20320241. The reversal of 20320222 is 22202302.

It is a super-2 number, since 2×20320222² = 825822844258568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26322 + ... + 27082.

It is an arithmetic number, because the mean of its divisors is an integer number (1394460).

Almost surely, 2^20320222 is an apocalyptic number.

20320222 is a deficient number, since it is larger than the sum of its proper divisors (13146818).

20320222 is a wasteful number, since it uses less digits than its factorization.

20320222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 855 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 20320222 is about 4507.7956919097. The cubic root of 20320222 is about 272.8827917114.

Adding to 20320222 its reverse (22202302), we get a palindrome (42522524).

The spelling of 20320222 in words is "twenty million, three hundred twenty thousand, two hundred twenty-two".